False. Proprietary name would be equal to the trade name of a drug.
Congruence.
The official chemical name is exactly actinium.
I think what you're referring to is a 'generic' product. Where it is a medication that performs exactly the same as a branded medicine.
An isosceles triangle
Tangential circles.
As I understand it, a database schema is a physical entity, it describes the structure of exactly how the data is stored and is itself stored by DBMS for reference. Data model, on the other hand, is an abstract representation of database.
Structure and identical are not similar. Structure refers to the way something is organized or built, while identical means exactly the same.
Unison
There are many different possible property changes in a chemical change. You must post the specific reaction for anyone to tell you exactly.
A chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions. Chemical compounds have a unique and defined chemical structure; they consist of a fixed ratio of atoms that are held together in a defined spatial arrangement by chemical bonds. Chemical compounds can be molecular compounds held together by covalent bonds, salts held together by ionic bonds, intermetallic compounds held together by metallic bonds, or complexes held together by coordinate covalent bonds.
In a chemical change, the atoms themselves remain intact; however, they can rearrange and bond with other atoms to form new substances. This process involves the breaking and forming of chemical bonds between atoms, but the atoms themselves are not irregular in structure.
The chemical formula for peppermint is exactly C10H20O1